body {        /*背景*/
    background-image: url('../images/3.jpg');
    background-size:cover;  /*裁切页面填充*/
    padding: 0;
    margin: 0;
}
#text {
    padding-left: 30%;
    padding-top: 322px;
    font-size: 100px;
    color: rgb(0,190,140);
}